OpenCL error CL_DEVICE_NOT_AVAILABLE Windows 7 using Intel i5

[LSolis]

hi,

I have installed Intel OpenCL SDK in my machine:

- Intel Core i5-2450 CPU @2.50GHz (RAM 4GB, Windows 7 SP1, 64 bits)

- Visual Studio 2013

- Platform selected: Intel (R) OpenCL (there is another "Experimental OpenCL 2.0 CPU Only Platform")

- SDK Version: intel_sdk_for_opencl_setup_6.0.0.1049

- OpenCL runtime installed: opencl_runtime_15.1_x64_setup (I got problems installing the 16.1, that´s why I installed this one)

I used two Intel examples so far: "intel_ocl_caps_basic" and "intel_ocl_gemm".

The first one runs with no problem giving the following output:

However, eveytime I use the "intel_ocl_gemm", I get an "CL_DEVICE_NOT_AVAILABLE" error, and it happens  in the gemm.cpp at line 446-447:

    context = clCreateContext(&context_props[0], 1, &device, 0, 0, &err);
    SAMPLE_CHECK_ERRORS(err);

I don not understand this. I think my i5 CPU is supposed to support this feature. As far as I know the i5-2450M supports SSE4.1 and SSE4.2.

Is there anything I am missing?

Any hint will be appreciatted, thanks

[Robert_I_Intel]

Hi,

Could you please provide me the command line you are running your gemm sample with. I suspect that the sample tries to select a GPU device, which you don't have. Could you try running your sample with -t cpu and provide the output?

Also, what kind of problems are you experiencing with 16.1 runtime?

[LSolis]

Hi Robert,

I am using Visual Studio 2013, so the command line info that I got from it:

command: C:\Users\L30nardoSV\Desktop\MyOpenCLApps\Intel\intel_ocl_gemm\GEMM\Win32\Debug\GEMM.exe

command argument: - t cpu

I still get the same error:

The line pointed as problematic is the same as I indicated in the first post.

any ideas about this?

Thanks,

[Robert_I_Intel · Accepted solution]

Could this be happening: https://software.intel.com/en-us/forums/opencl/topic/632440 ?

[LSolis]

Hi Robert,

That works!. As mentioned in that link, it is required to use the OpenCL 2.0 platform instead of the 1.2 one.

In my case, it was not needed to use "-t cpu", but only "-p 1" or alternatively "-p Experimental".

Regarding to the 16.1 runtime, I was not able to install it.

Everytime I tried, the installation process was interrupted. The message I got was "Intel HD Graphics driver must be installed first", altough it was uninstalled.

Thank you very much for the helpful info.